Bicycle-pedal



(No Model.)

w. I. GRUBB. BICYCLE PEDAL.

No. 547,639. Patented 00t.8,1895.

Inventor- At'torn ey.

AN DREW B GRAHAMv F'HOTO-UYHD.WASHINGTON v.0

Witnesse L novel features are pointed out in the subjoined NITED STAT-ES Y FFICE.

'ATENT BICYCLE-PEDAL.

. SPECIFICATION forming part of Letters Patent No. 547,639, dated October 8, 1895.

Application filed January 14, 1895.

To all whom it may cancer-m Be it known that I, WI LIAM I. GRUBB, a citizen of the United States, residing at Pottstown, county of Montgomery, State of Pennsylvania, have invented certain Improvements in Bicycle-Pedals, of which .the follow ing is a specification.

My invention relates to an improved form of pedal for bicycles or similar vehicles, and my main object is to provide a simple and economical construction which will at the same time present a neat appearance and be easily and conveniently maintained in satisfactory working condition.

The invention is fully described in connection with the accompanying drawings, and the claims.

Figure 1 is a plan View of a pedal embodying my invention, showing it ready to be ap-' plied to a crank-pin and provided on one side with a friction-piece, part of which is broken away. Fig. 2 is a sectional view mainly on .the line :0 a; of Fig. 1, with the friction-piece clamping-screw removed. Fig. 3 is a side elevation showing a portion of the'friction-piece broken away andone of the clamping-plates removed. Fig. at is a plan view of one of the frame-plates, showing also a portion of the other frame-plate reversed and ready to be moved into engagement with it. Fig. 5 shows one of the friction-piece clamping-plates separate. Fig. 6 indicates a modified form of frame-plate.

The frame of my pedal is made up of two similar plates A and A, both of which may be stamped out of sheet metal with the same punching-dies,subsequentlybent up into similar form in the same shaping-dies, and finally united to form the frame by simply reversing and interlocking them.

The punched plate in the flat consists of two parallel strips connected near either end by cross-strips.

Referring particularly to the preferred form, as most clearly shown in Fig. 4 in connection with Fig. 2, in which the bent-up shape is indicated, the longitudinal strips A A are flanged outward and the cross-strips a, a are bent in the opposite direction at the center to semicircular form, as shown at b b. The

flanged portions have their outer edges ser= rated, as at f, and their inner edges notched near either end, as at g g, and the crossstrips are notched, as at dd, on either side of the semicircular portion 2), so as to form a notched joint or halving with the similar reversed plate A, a portion of which is indicated in Fig. 4 ready to be pushed into engagement to form the interlocked frame shown'in Figs. 1, 2, and 3. When'the reversed platesAand A are thus interlocked, the oppositely-extending flanged portions form the sides of the pedal-frame, and the oppositely-curved central portions b b of the cross-pieces of a a form central openings, through which the crank-pin barrel H passes. The cupped head it of this barrel seats against the faces a c of the interlocked plates, which faces are drawn flush with each other by means of the screwcup E, which engages the opposite end of the barrel. The cupped head h of the barrel is notched at h to engage the projected edges 0 c of the cross-strips a a, so as to positively prevent rotation of the barrel and rigidly connect it with the frame-plates, while at the same time rigidly uniting the latter.

The serrated edges f f form a foothold, which it .is preferable to supplement by a friction-piece of rubber or similar material. This I accomplish in a simple manner, as follows: The notches g in the meeting edges of the plates when brought together form openings or perforations 9 Fig. 3. These openings receive the flanged heel-pieces m, formed at one end of two similar clamping-plates M,the opposite ends of which have semicircular recesses m in their meeting edges at the center of the pedal, which together form a circular opening for the passage of a clam ping-bolt N, the head of which is seated equally on each of the clamping-plates, while the body passes through an intermediate friction-piece K and through the opening e 6 formed in the side of the pedal-frame. I am thus enabled to firmly secure friction-pieces to the frame or to remove the same by means of a single bolt.

In the modified form of plateindicated in Fig. 6 the reversed plates are united by push= ingthe single concaved cross-bar a of one plate through the slot at a between the cross-= bars a a of the other plate, the crank-pin barrel passing through the central opening formed by the combined plates.

too

Having thus fully described my invention, I do not desire to limit myself to the exact construction shown; but

IVhat I claim is- 1. A bicycle pedal frame comprising two plates each formed with parallel longitudinal strips and connecting cross strips, said longitudinal strips being bent or flanged outward and the cross-strips of one plate adapted to interlock with those of the second when reversely arranged, substantially as and for the purpose set forth.

2. A bicycle pedal frame comprising two plates each formed with parallel longitudinal strips and connecting cross strips the longitudinal strips being bent or flanged outward and the cross strips of each plate being similarly slotted so as to interlock with a longitudinal movement when brought together in reversed position substantially as and for the purpose set forth.

3. A bicycle pedal comprising two similar plates flanged at each side and having cross strips rcverscly bent into semicircular form midway between the flanged sides and provided with notches or slots d d whereby the reversed parts are interlocked, anda barrel or sleeve passing through the central opening and provided with a head seating against the edges of the abutted plates and with a notch engaging the same to prevent any turning of the barrel in said central opening substantially as and for the purpose set forth.

4. In a bicycle pedal the combination with a pedal frame having the side thereof provided with a perforation near each end, of a rubber or other friction piece secured thereto by means of two clamping plates each having a heel engaged in one of said perforations and the abutting edges engaged by a clamping bolt, substantially as and for the purpose set forth.

In testimony whereof I aliix my signature in presence of two witnesses.

WILLIAM I. GRUBB. \Vitnesses:

CAMERON E. STRAUSS, W. G. STEWART. 

